Engine control.



L. J. CRAWFORD.

ENGINE CONTROL.

APPLICATION FILED MAY 29, 1915.

Patented J an. 25, 1916.

2 SHEETS-SHEET 1.

INVENTOI? ATTORNEYS THE COLUMBIA BLANIIGRAPH 00.. \VAMHNGTON. D. c.

L. J. CRAWFORD.

ENGINE CONTROL.

APPLICATlON FILED MAY 29, 1915.

1 9 lfi figfln Patented J an. 25, 1916.

2 SHEETS-SHEET 2.

WIT/V58 E? N llVl/E/VTOR Lesienf Crawford.

' N ATTORNEYS THE COLUMBIA PLArgoGRAPH co., WASHINGTON, D. C.

LESTER J. CRAWFORD, or ELECTRA, TEXAS.

ENGINE CONTROL.

To all whom it may concern: 1

Be itknown that I, Lnsrnn J. CRAWFORD,

fuel combustion when the power-transmit ting element, for any reason,has interrupted the transmission of energy.

An object of the invention is'to provide a simple, inexpensive andefiicient means for controlling an internal combustion engine from thedriving element.

A further object of theinvention is to provide a control for the airsupply of the carbureter or mixing chamber which is operable from thepower transmission meansof an internal combustion engine.

A still further object of the invention is to provide an engine controlwhereby internal combustion engines left to run unattended will not runaway when their power transmitting element has ruptured, and which willprevent the burning of the engine clutches and belt if the drivingelement slips.

With the above and other objects in View, the nature of which willmorefully appear as the description proceeds, the invention consists in thenovel construction, combination and arrangement of parts as herein fullydescribed, illustrated and claimed.

In the accompanying drawings, forming part of the application, similarcharacters of reference indicate corresponding parts in all the views.

Figure 1 is an end elevation of a gas engine provided with my governingmeans; Fig. 2 is a side elevation of Fig. 1; Fig. 3 is an enlarged viewof the governing means; Fig. 4 is a similar view showing the reverseoperation of the governor to what is shown in Fig. 3; Fig. 5 is amodified structure of the governing means; and Fig. 6 is a furthermodification thereof.

Referring to the drawings, 7 represents an engine the carbureter ormixing chamber 8 of which has a butterfly valve for controlling the fuelmixture leading to the engine and controlling from a fly-wheel gov-Specification of Letters Patent.

ernor 9, orany. other governor driven from the main shaft of the engine.The engine 1S also provided with a pulley 10 which carries a belt .11constituting thepower-trans mitting element of the motor or engine.

Engagingthe under side of the belt 11 1s a pulley 12 which drives a ballgover'nor. 13

, y Patented Jan. 25, mm. Application filed May 29, 1915. Serial No.31,236. 1

mounted on an extension of the engine 1 frame. The ball governor 13.carries a collar l l which is adapted to participate in the axialmovement thereof but whichdoes not rotate with the governor. An arm 15extendsfrom said collar. A rod 16 passes through the arm 15 andconstitutes a guide therefor when said arm moves with the collar 14. Thesaid rod also resists the ten dency of the collar 14 to rotate with thegovernor. The arm 15 carries an extension 17. This extension normallyengages a damper or valve 18 of an air passage 19 of the carburetor 8.As shown in Fig. 3, the damper 18 is open when the movement of thegovernor is arrested or the speed thereof greatly reduced, consequentlyadmitting air to the carbureter and greatly diluting the fuel mixture,rendering the combustion ineffective and thus stopping the engine. Thespeed of the governor 13 will be greatly reduced if the belt 11 slips onthe p'ulley10 or, if the belt 11 slips off the pulley the governor 13will stop and, consequently, the

damper 18 will be opened and the engine will stop. A rupture of the beltwill prorluce the same result.

When, in lieu of diluting the mixture, it is desired to choke the engineby enriching the mixture, the extension 17 of the arm 15 is swung to theposition indicated in Fig. 4. In this case, the damper 18 carries aweight 20 which normally tends to keep the damper open. When the beltslips or breaks, the governor will close the damper and, therefore,enrich the mixture, which will choke the engine. I

In Fig. 5 the damper 18 with the weight 20 is connected to the arm 15 bya chain 21 which is in alinement with the weight. A reduction in thespeed of the governor or the stopping of the same will open the damper.That is, the action shown in Fig. 5 is similar to the action shown inFig. 3. In Fig. 6 the modification shown operates similarly to thatshown in Fig. 4. In this case the damper 18 is not provided with acounterweight, as gravity tends to close the damper the same as in Fig.3. The chain 21 connecting the arm to the damper raises the same againstgravity.

From the above description it will be noted that the auxiliary governingdevice, which is operable irom the power transmitting element, willinterfere with the internal combustion of the gases within the engine ifthe power-transmitting element doesnot travel at the proper velocity orits travel is interrupted altogether, as maybe I pos'siblein the case ofa rupture. The provision of such governing means will prevent theburning of the engine clutches and belt due to the slipping of the belton the driving pulley, and it willalso dispense with the specialattendance necessary for that purpose.

While I have described the principle of operation, together with thedevice which I now consider to be the best embodiment thereof, I desiretohave it understood that the device shown is Vmerely illustrative andthat such changes may be made as are within the-scope of the appendedclaims.

I claim:

1'. In combination, an internal combustion engine including a carburetoror mixing chamber, a governor, means for transmitting power from theengine adaptedto drive the governor, an arm adapted to participate inthe' movement of the governor, said carbureter or mixing chamber havingan air damper, and an operative extension from the arm to the damper.

2.-In combination, an internal. combustion engine having a carbureter, abelt for transmitting power from the engine, a governor a= ulle fordrivin the overnor en- 5 V p v D b Copies of this patent may be obtainedfor .damper, and an extension carried by the arm and operativelyengaging said air damper.

3. An internal combustion engine control comprising a governor, a pulleyfor driving the same adapted to be operated by the means fortransmitting the power from the engine, an arm associated with thegovernor and adapted to participate in the movements thereof, and anextension from said arm adapted to operatively engage the fuel mixturesupplying means of the engine.

a. In combination, an internal combustion engine having a carbureter ormixing chamber, a belt for transmitting power from the engine, agovernor, a pulley for driving said governor engaging the under s ide ofthe belt, an arm extending laterally from said governor and adapted toparticipate in the movements thereof, means for guiding said arm, saidcarbureter or mixing chamber having an air damper, and an extensionpivotally mounted on said arm and adapted to engage said damper, wherebysaid damper can be optionally maintained either closed or open in theinoperative position of the governor.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

LESTER J. CRAWFORD.

WVitnesses P. E ASHWORTl-I, I. T. KRoHN.

fivecents each, by addressing the Commissioner of Patents, Washington,D. G.

